5 Errors in my IntelliSense

Carlos Estudillo

4y1kC#

Hello Mister it is my first question in this post, I´m very interested in understand the best option in order to connect a postgresql database using c-sharp.

At this moment I have a problem.

I have 5 different errors.

Error CS0103 El nombre 'tbHost' no existe en el contexto actual WinFormsMusic ..\source\repos\WinFormsMusic\Form1.cs

Error CS0103 El nombre 'tbPort' no existe en el contexto actual WinFormsMusic ..\source\repos\WinFormsMusic\Form1.cs

Error CS0103 El nombre 'tbUser' no existe en el contexto actual WinFormsMusic ..\source\repos\WinFormsMusic\Form1.cs

Error CS0103 El nombre 'tbPass' no existe en el contexto actual WinFormsMusic ..\source\repos\WinFormsMusic\Form1.cs

Error CS0103 El nombre 'tbDataBaseName' no existe en el contexto actual WinFormsMusic ..\source\repos\WinFormsMusic\Form1.cs

Can you tell me the problem.? Should I have to do something extra.? Thank you so much, regards from Mexico City.

Form1.cs Error

Carlos Estudillo

5 Replies

Know the answer? Post it — somebody with the same question will find it here.

Nitin Sontakke4y ago
Accepted answer
Hello Sachin,

Please note that the user is unlikely to have those text boxes. I infer it from the fact that there are red squiglly lines under the names.

It seems that the user has probably copied this piece of code from somewhere else.

What do you think?
Nitin Sontakke4y ago
Hello Carlos,

Notice the date on the article which you are referring. It is sometime from 2009.

Furthermore, the SharpDevelop environment it depends on is discontinued and not being supported any more.

Frankly, I think you should not waste your time and energy in learning something which is so old.

You are better of instead learning tooling that comes with Visual Studio 2022 and .Net 6.

Should you need any help, please do let us know.

Hope it helps!
Carlos Estudillo4y ago
Hello, I´m a new Developer using PostgreSQL. I´m follow this hyperlink to understand the concepts.

www.codeproject.com/Articles/43211/A-CRUD-Form-using-SharpDevelop-and-PostgreSQL

In order to understand a pre-validation between my application and the RDBMS (PostgreSQL).

At this moment I have another doubt, it is an error during the configuration.

Error in C# - VS Error - NpgsqlConnection

Can you help me to tell me.? What should I do to fix the problem.? in Visual Studio.

Thank you, so much.

Juan Carlos Estudillo Estrada.
Sachin Singh4y ago
your String.Format is wrong.
Why are you even using it when you are putting static values.
modify it as
string connectionString=String.Format("Server={0};Port={1};UserId={2};Password={3};Database={4}", tbHost.Text,tbPort.Text,tbUser.Text,tbPass.Text,tbDataBaseName.Text);
Nitin Sontakke4y ago
From what I see you alreay have provided all the information needed to connect. (I do not use PostgreSQL)

Remove the String.Format function altogether from your code on line 30.

Just assign the FIRST parameter of the String.Format function to the connString variable directly and you should be good to go.

Provided, of course, the database is set-up correctly.

Hope it helps!